Originally Posted by X1337
Let me guess, you need the phyics card or does it run off the cpu?
Anyways, I still than companys should make support for having a PCI / APG card doing phyics and PCIE doing the rendering. Its just my 2 cents
No. Just the physics engine itself. You don't need a physics card. Forza Motorsport is renowned for it's highly accurate driving physics. Popular Science did this one test where they had a professional racecar driver and an ameteur driver drive the same cars on the same track (both played Forza and drove the real track). They did calculations on the performance and times of both drivers and found the game times to be highly similar to their real life times.
Also, another cool thing is that damage is super realistic. Any damage will affect your car's acceleration, handling and top speed abilites. Forza Motorsport takes it to another level.
If you ask me, dedicated physics are more hype than reality. Sure, the idea that Ageia came out with is good, but they didn't pull it off well enough. Software based physics are more than capable enough. Look at the Source Engine. It's basically a modified Havok physics engine. No physics accelerator needed. The price isn't good enough to justify the performance. Though Ageia is coming out with a PCI-E version of the PhysX, there won't be any performance increases. I would rather see what ATI Triple Play comes out with and what NVIDIA cooks up.